ASTROSAT CZTI

Data Quality Report

Orbit 52187

Creation date: 2025-05-22T15:58:53.756856
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T08_9000006472_52187cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52187cztM0_level2_quad_clean.evt
Size (bytes)966,913,92069,148,800
Size922.1 MB 65.9 MB
Events in quadrant A3,949,053595,641
Events in quadrant B3,664,807639,437
Events in quadrant C12,439,547268,312
Events in quadrant D15,232,128133,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161161
B0153921
C0415041
D0497618

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65461542.352582%
B65471271.939820%
C6547380858.164045%
D6545525580.290298%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7326 6547 96 96 1.31% 1.47%
B 7327 6548 54 54 0.74% 0.82%
C 7327 6548 3097 3097 42.27% 47.30%
D 7326 6547 4650 4650 63.47% 71.02%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 95 386658 2290.02 677 661 168.6
A 3 114 248539 1470.6 677 661 168.6
A 3 95 119189 703.2 677 661 168.6
B 4 81 260572 1807.58 671 648 143.8
B 4 206 117737 814.27 671 648 143.8
B 0 213 92664 639.9 671 648 143.8
C 15 248 7530016 60433.22 446 442 124.6
C 15 224 2398269 19245.23 446 442 124.6
C 12 252 290467 2327.77 446 442 124.6
D 6 42 8303462 75009.38 383 365 110.7
D 15 93 2064412 18646.4 383 365 110.7
D 12 17 1031942 9319.17 383 365 110.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter